Method of capacitor manufacture

Abstract

A capacitor assembly and method of manufacture is disclosed, the capacitor being of the type including a capacitor winding received into a capacitor housing cavity, with a pair of terminal contact straps each positioned in contact with an opposite face of the capacitor winding and along the upper surface of the housing adjacent the cavity. A cap overlying the capacitor winding, as well as the terminal, is provided by an injection molding of material by means including a molding die which compresses one of the contact straps which normally upwardly extend to enable positioning of the mold top plates over the housing recess during the molding process. Spring back of the contact allows the contact to return to its original position.

The embodiments of the invention in which an exclusive property or privilege is claimed are defined as follows: 
     
       1. A method of manufacturing a molded capacitor of the type including a molded capacitor housing having a recess extending into a flanged side thereof and a capacitor winding disposed therein, a pair of connector straps having sections positioned in contact with a respective end face of said capacitor winding, at least one of said connector straps including a spring tab section extending from the said flanged side at an acute inclination thereof, said method comprising: assembling said connector straps and capacitor winding into said capacitor housing;   molding a top cover in place over said flanged side and capacitor winding in said recess, said molding step including the steps of placing said assembled components into a molding die, said die including a top plate positioned over the assembled components and adapted for defining in part a die cavity corresponding to said top cover, said top plate further including a surface pressing said spring tab against said flanged side with said top plate in position, said molding step including the step of placing said top plate in position compressing said spring tab and injecting a plastic molding material into said cavity.   
     
     
       2. The method according to claim 1 wherein said capacitor components are configured with said recess surfaces retaining connector strap portions extending across said flanged side, wherein in said molding step said connector straps comprise in part a mold cavity, whereby said molding material forming said top cover molded over said strap sections thereof. 
     
     
       3. The method according to claim 2 further including forming a recess on said flanged side corresponding to said flange spring tab in said compressed position, whereat said step of placing said top plate in position compressing said spring tab into said flanged side recess.